where iz tha most common oil leak...i already checked tha oil sensor unit...and changed it...but now there iz one towards tha front anyone...

 

well i bought my neon with an oil leak and it was coming from the cam seal... the leak looks like its coming from the passenger side of the oil pan near the front... i heard that is a relatively common seal to go luckily its a $5 part but kinda a pain to put on hope that helps

 

try the rear main seal..I had to replace it on every engine I had (and i had four)..Its relatively inexpensive but a pain in the sack to put in....Its right behind the flywheel..hope that helps